WO2013061292A1 - Système de communication pour gérer un réseau de liaisons louées à traitement de secours sans fil - Google Patents

Système de communication pour gérer un réseau de liaisons louées à traitement de secours sans fil Download PDF

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Publication number
WO2013061292A1
WO2013061292A1 PCT/IB2012/055910 IB2012055910W WO2013061292A1 WO 2013061292 A1 WO2013061292 A1 WO 2013061292A1 IB 2012055910 W IB2012055910 W IB 2012055910W WO 2013061292 A1 WO2013061292 A1 WO 2013061292A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
modem
network
interface
block
Prior art date
Application number
PCT/IB2012/055910
Other languages
English (en)
Inventor
Sastry VVR
Jayant Bhatnagar
Shanker A. BHAVANI
Sai Jayram AKV
Suresh BR
Ramanjaneya P. REDDY
Cherukuri VDS CHOWDARY
Original Assignee
Centre For Development Of Telematics (C-Dot)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre For Development Of Telematics (C-Dot) filed Critical Centre For Development Of Telematics (C-Dot)
Priority to CN201280053038.4A priority Critical patent/CN104012037A/zh
Priority to CA2853417A priority patent/CA2853417A1/fr
Priority to US14/354,338 priority patent/US20140269259A1/en
Priority to GB1407189.8A priority patent/GB2509465A/en
Publication of WO2013061292A1 publication Critical patent/WO2013061292A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2898—Subscriber equipments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/066—Telephone sets adapted for data transmision
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/199—Modem

Definitions

  • the present disclosure relates to communication network. More particularly the embodiments of the disclosure relate to a communication system for managing leased line networks with wireless fall back.
  • Network architecture for managing leased line networks is shown in figure 1.
  • Leased lines 100 are used to connect networks of two locations (101, 105) of an organization using a nailed up dedicated path.
  • the dedicated path is through El/HDSL interfaces routed through PSTN switches.
  • the architecture comprises of a router 102, a V35 modem 104 and a PSTN exchange 106.
  • Router 102 aggregates the IP links in an organization and puts on a V35 interface 103 of WAN port or the router 102.
  • WAN port or the router 102 is connected to V.35 modem 104 on a V.35 interface connector 103.
  • V35 modem 104 receives the IP data through V35 interface 103 and transmits the received data towards PSTN network 106 either on G703 (El interface) or HDSL interface 105. Both G703 and HDSL 105 are El interfaces with different line encoding standards.
  • PSTN switch 106 is connected to the El interfaces to receive the IP data and routes to a different location using its own El network towards other end of V35 modem 104 and finally to a router 102 on the other side of the PSTN network 106.
  • the present disclosure solves the limitations of existing techniques by providing improved and easy access to the users for managing the network connected devices without line of sight requirement.
  • the present disclosure provides a communication system for managing leased line networks comprising, a router to route data from one network to another network.
  • the system includes a modem configured to receive data and transmit the data to a predefined destination using internet protocol (IP) network.
  • IP internet protocol
  • the data is either from a router or an IP network.
  • the modem includes a physical interface block to receive the data using an interface to generate predetermined data signals.
  • the modem also includes, an ethernet processor block to receive the predetermined data signals to generate ethernet packets and an Asymmetric Digital Subscriber Line (ADSL) processor block to receive the ethernet packets to generate ADSL data.
  • the ADSL processor block establishes communication between the modem and the internet protocol (IP) network through existing DSLAMS in PSTN network.
  • IP internet protocol
  • the interface block connected to the ADSL processor block to perform at least one of transmitting the ADSL data onto the IP network and receiving data from the IP network.
  • the ADSL signals are at least one of decrypted signals if transmitted to an IP network and encrypted signals if transmitted to a router.
  • the modem further includes a USB interface wireless block connected to the ethernet processor block to provide wireless communication between the modem and the IP network if there is a failure in the interface block.
  • the system also includes a power supply to provide predetermined voltage to the modem from an external power supply.
  • the interface block comprises a USB interface block consisting of one or more USB ports to provide communication and an ADSL interface block to establish communication between the modem and the IP network using telephone lines.
  • the interface which connects the router with the physical interface block is V.35 interface.
  • the modem also comprises of a TDM processor block to receive data from the physical interface block to generate TDM frames.
  • the modem supports a bandwidth up to 8Mbps over V.35 and also supports 10/100 ethernet interface.
  • the present disclosure provides a method of communication in a leased line network.
  • the method includes receiving one or more data packets by a modem from a predefined source.
  • the method also includes performing a predetermined operation on received data packets to generate predefined data signals.
  • the predetermined operation is one of either encrypting or decrypting operation based on the predefined source, and transmitting the predefined data signals from the modem to a destination using an internet protocol (IP) network.
  • IP internet protocol
  • Figure 1 illustrates a communication system for managing leased line networks, as a prior art.
  • Figure 2 illustrates a communication system for managing leased line networks in accordance with an embodiment of the present disclosure.
  • Figure 3 illustrates a communication system for managing leased line networks with wireless fallback in accordance with an embodiment of the present disclosure.
  • Figure 4 is an exemplary block diagram of a modem in accordance with an embodiment of the present disclosure.
  • An exemplary embodiment of the present disclosure is a communication system for managing leased line networks.
  • the leased line connects two locations for data telecommunication service and is a reserved circuit between two points.
  • the leased lines can span short or long distances. They maintain a single open circuit at all times, as opposed to traditional telephone services that reuse the same lines for many different conversations through a process called switching.
  • the leased lines are used to connect networks of two locations of an organization using a nailed up dedicated path.
  • the communication system provides wireless interface as a backup in case of failure in the wired interface.
  • the wireless feedback is a branched port and is used in cases where the connectivity needs to be establishes on available wireless links.
  • the wireless connection is established by using 3G, LTE, Wifi, WiMax or any other existing wireless network communication protocols.
  • the wireless interface can be provided using any off-the-shelve modules.
  • FIG. 2 illustrates a system for managing leased line networks in accordance with an embodiment of the present disclosure.
  • the system comprises of a router 102, V.35 modem 201 and an IP network 203 for transmitting data from one location to another location, as an example from location 1 (101) and location 2 (105) as shown in fig. 2.
  • the router 102 aggregates the data from location 1 and puts on a V.35 interface 103 of Wireless Area Network (WAN) port or the router 102.
  • V.35 interface 103 is a high speed serial interface designed to support both higher data rates and connectivity between data terminal equipment (DTEs) over digital lines.
  • the WAN port is connected to a V.35 modem 201 on a V.35 interface connector 103.
  • the V.35 modem 201 takes in the data through the V.35 interface 103, which is a high level data link control (HDLC) data, i.e the HDLC protocol embeds information in the data that allows V.35 modem 201 to control data flow and correct errors.
  • the V.35 modem 201 encapsulates the HDLC data in an ethernet MAC frame and forms an ethernet packet.
  • the V.35 modem 201 converts the ethernet packet to Asymmetric Digital Subscriber Line (ADSL) towards the ADSL interface 202a and sends data to IP network 203 through already established ADSL connection.
  • ADSL Asymmetric Digital Subscriber Line
  • the ADSL enables faster data transmission over copper telephone lines than a conventional voice band modem can provide.
  • the V.35 modem 201 performs encryption of the data for mission critical applications.
  • the IP network 203 through the ADSL interface 202a sends the encrypted data to the V.35 modem 201.
  • the V.35 modem 201 converts the ADSL interface 202b to the V.35 interface 103b.
  • the V.35 modem 201 decrypts the received data from the IP network 203 and transmits the decrypted data to a router 102 on the other side of the IP network through the V.35 interface 103b.
  • the router 102 routes the decrypted data to the destination location 2 105.
  • FIG 3 illustrates a system for managing leased line networks using wireless interface when ADSL fails (202a, 202b), as one embodiment.
  • the wireless interface 301 which is a branched port from V35 to Ethernet block, is used in cases where ADSL is not available. Also, the wireless interface 301 is used when connectivity has to be established on available wireless links.
  • the wireless interface is at least one of be 3G, LTE, Wifi, wimax or any other existing wireless protocols.
  • the wireless interface is provided using any off- the-shelve modules.
  • the present disclosure provides a method of communication between networks of two locations. Firstly, one or more data packets are transmitted from a source location to a router 102. The router 102 routes the data packets to a V.35 modem 201 through a V.35 interface 103a. The V.35 modem 201 transmits the data packets to an IP network 203 through an ADSL interface 201. The IP network 203 requires an ethernet interface to receive the data packets from the V.35 modem 201 which is expensive and has a lot of cable pairs. Also, if the location of router 102 is far from the IP network 203, then the expenses will further more. To overcome this, the V.35 modem converts the ethernet interface to an ADSL interface.
  • the ADSL interface 406 makes use of existing TIP/RING 409 of telephone lines. Telephone lines are more common and available at all places.
  • the V.35 modem encrypts the data packet and transmits the encrypted data packet to the IP network 203.
  • the IP network 203 transmits the encrypted data packet to the V.35 modem 201 through the ADSL interface 202b.
  • the V.35 modem 201 decrypts the data packets and transmits the data packets to the router 102 that is on the side of the IP network.
  • the router 102 routes the data packets to the destined location 105.
  • the method also includes establishing communication using a wireless interface in case of failure in the wired interface i.e. when ADSL interface fails.
  • FIG. 4 is an exemplary block diagram of a V.35 modem 201 with wireless feedback in leased line network, in accordance with an embodiment of the present disclosure.
  • the V.35 modem 201 comprises of a physical interface block or a V.35 physical interface block 401, a power supply block 411, an ethernet processor block or V.35 to ethernet processor block 403, ADSL processor block or an ethernet to ADSL processor block 404, a memory block 412, a V.35 alarm block 416, a ADSL alarm block 417, a ADSL physical interface block 406, a USB interface block 405 and USB interface for ADSL fallback block 407 or USB interface wireless block.
  • the V.35 physical interface block 401 terminates the V.35 interface from a router 102 or any other device which is a DTE. Also, the V.35 physical interface block 401 converts differential V.35 signals to singled ended Transistor-Transistor Logic (TTL) signals and vice versa. The TTL signals are then given to V.35 to ethernet processor block 403.
  • the V.35 to ethernet processor block 403 takes in the V.35 data, which is an HDLC data from the V.35 interface block 401, encapsulates an ethernet MAC frame and forms an ethernet packet. The ethernet packet will be given to the ethernet to ADSL processor block 404.
  • the V35 physical interface block 401 does encryption of the data for mission critical applications.
  • the ethernet to ADSL processor block 404 is implemented using standard ADSL chip.
  • the ethernet to ADSL processor block 404 takes in the ethernet packet from the V.35 to ethernet processor block 403 and generates an ADSL signal towards ADSL interface.
  • the ethernet to ADSL processor block 404 establishes the ADSL connection towards the IP network, performs maintenance of digital subscriber line (DSL) interface, perform Virtual Local Area Network (VLAN) tagging, and support Dynamic Host Configuration Protocol (DHCP) etc.
  • DSL digital subscriber line
  • VLAN Virtual Local Area Network
  • DHCP Dynamic Host Configuration Protocol
  • a VLAN is a method of creating independent logical networks within a physical network.
  • VLAN Tagging is the practice of inserting a VLAN ID into a packet header in order to identify which VLAN the packet belongs to. More specifically, switches use the VLAN ID to determine which port(s), or interface(s), to send a broadcast packet to.
  • DHCP is a network configuration protocol for hosts on Internet Protocol (IP) networks. The locations of an organization that are connected to IP networks must be configured before they can communicate with each other. The most essential information needed is an IP address, and a default route and routing prefix. DHCP eliminates the manual task by a network administrator. It also provides a central database of devices that are connected to the network and eliminates duplicate resource assignments.
  • the ethernet to ADSL processor block 404 modulates high-frequency tones for transmission to a Digital Subscriber Line Access Multiplexer (DSLAM).
  • DSLAM Digital Subscriber Line Access Multiplexer
  • the ethernet to ADSL processor block receives and demodulates high-frequency tones from at least one of the DSLAM, supports voice, video and data, performs framing and line encoding, establishes the connection towards DSLAM, obtains the IP address from DNS server, provides option for firewall, provides option for VPN and VLAN tagging, performs as a router 102 between the ethernet interface and ADSL interface or as a bridge between ethernet interface and ADSL interface.
  • a USB interface block for ADSL fall back or USB interface wireless block 407 is provided in the communication system as one embodiment.
  • the USB interface wireless block 407 is a branched port from V35-Ethernet block and is used in cases where ADSL interface is not available or connectivity needs to be establishes on available wireless links.
  • the wireless interface block 407 is connected to a wireless modem 410 which uses at least one of 3G, LTE, Wifi, WiMax or any other network communication.
  • the interface can be provided using any off-the-shelve modules.
  • the power supply block 411 configured in the V.35 modem takes 12V DC power from an external power adaptor and generates all required voltages in V.35 modem 201 to operate.
  • the memory block 412 configured in the V.35 modem is interfaced to the V.35 ethernet processor block to store the software program, IP addresses, configuration parameters etc.
  • the V.35 alarm block 416 displays various types of V.35 specific alarms.
  • the ADSL alarm block 417 displays various types of ADSL specific alarms.
  • An analog TIP/RING lines or TIP/RING interface for ADSL 409 are connected to ADSL physical interface block 406 to perform A/D conversion and two-four wire conversion, in one embodiment.
  • the V35 modem includes a USB interface block to connect an external computer to the V.35 modem through the USB for configuration and settings.
  • An ethernet interface block is a branched port from V35 -Ethernet block. The interface is used in cases where ADSL is not available or when very high data rates are required. ADSL technology places a limitation on uplink data rate of 1.5Mbps where as Ethernet can go all the way upto 100Mbps.
  • the V.35 modem comprises of a TDM processor block 402 or a V35 to TDM processor block 402 to receive data from the physical interface block 401 to generate TDM frames.
  • a framer block 413 is connected to the TDM processor block 402 to receive the TDM frames and generate El frames.
  • the El frames are transmitted onto the IP network using at least one of HDSL interface block 414 and El /Tl LIU block or G703 LIU interface block 415.
  • the El frame formed is coded to the HDSL format by the HDSL interface block which can then be transmitted over the El line.
  • the El frame formed in the framer block is coded to the G703 coding.
  • G703 LIU interface block 415 puts the data onto the TIP/ TRING and RTIP/ RRING. Further the data is transmitted over the El line which can cover very long distances.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de l'invention concernent un système de communication pour gérer des réseaux de liaisons louées. Le système comprend un routeur pour acheminer les données d'un réseau vers un autre, et un modem V.35 configuré pour recevoir les données du routeur et les transmettre à une destination prédéfinie en utilisant un réseau IP (protocole internet). L'interface qui connecte le routeur au modem V.35 est une interface V.35. Le réseau IP nécessite une interface Ethernet pour recevoir les données et les transmettre à une destination souhaitée. Le modem V.35 est conçu pour convertir l'interface V.35 en une interface Ethernet, mais étant donné que l'interface Ethernet est chère, le modem V.35 convertit l'interface Ethernet en une interface ADSL pour établir une connexion vers le réseau IP. Le système comprend également une interface vers 3G/LTE/Wifi qui est utilisée comme chemin de réserve en cas de défaillance de l'interface ADSL.
PCT/IB2012/055910 2011-10-27 2012-10-26 Système de communication pour gérer un réseau de liaisons louées à traitement de secours sans fil WO2013061292A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201280053038.4A CN104012037A (zh) 2011-10-27 2012-10-26 一种用于无线失效时管理租用线路网络的通信系统
CA2853417A CA2853417A1 (fr) 2011-10-27 2012-10-26 Systeme de communication pour gerer un reseau de liaisons louees a traitement de secours sans fil
US14/354,338 US20140269259A1 (en) 2011-10-27 2012-10-26 Communication system for managing leased line network with wireless fallback
GB1407189.8A GB2509465A (en) 2011-10-27 2012-10-26 A communication system for managing leased line network with wireless fallback

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3682/CHE/2011 2011-10-27
IN3682CH2011 2011-10-27

Publications (1)

Publication Number Publication Date
WO2013061292A1 true WO2013061292A1 (fr) 2013-05-02

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PCT/IB2012/055910 WO2013061292A1 (fr) 2011-10-27 2012-10-26 Système de communication pour gérer un réseau de liaisons louées à traitement de secours sans fil

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US (1) US20140269259A1 (fr)
CN (1) CN104012037A (fr)
CA (1) CA2853417A1 (fr)
GB (1) GB2509465A (fr)
WO (1) WO2013061292A1 (fr)

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Also Published As

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GB201407189D0 (en) 2014-06-11
CA2853417A1 (fr) 2013-05-02
US20140269259A1 (en) 2014-09-18
GB2509465A (en) 2014-07-02
CN104012037A (zh) 2014-08-27

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